import type { Observable } from 'rxjs';
import type { RuntimeUpdateAdapterOptions, RuntimeUpdateEvent, RuntimeUpdateSource } from './types';
export type RuntimeUpdateHandler = (event: RuntimeUpdateEvent, source: RuntimeUpdateSource) => void;
export declare class RuntimeUpdateAdapter {
    private readonly handler;
    private eventSource?;
    private streamSubscription?;
    constructor(handler: RuntimeUpdateHandler);
    connectSse(url: string, options: RuntimeUpdateAdapterOptions): void;
    connectStream(stream: Observable<RuntimeUpdateEvent>): void;
    disconnect(): void;
    private disconnectSse;
    private disconnectStream;
    private parseMessage;
}